LONDON, ENGLAND - AUGUST 05: Silver medalist Roger Federer (L) of Switzerland, gold medalist Andy Murray (C) of Great Britain and bronze medalist Juan Martin Del Potro of Argentina pose during the medal ceremony for the Men's Singles Tennis match on Day 9 of the London 2012 Olympic Games at the All England Lawn Tennis and Croquet Club on August 5, 2012 in London, England.  (Photo by Popperfoto via Getty Images/Getty Images)